API finished.
/api/companies - get all fields for all companies
/api/companies?id=1 -  get all fields for company with given id

/api/companies?id=1&amp;fields=id,name,address,postal_code - get requested fields for company with id

/api/companies?fields=id,name,address,postal_code - get requested fields for all companies
Merge remote-tracking branch 'origin/master'